Lysine-derived cross-links in the egg shell membrane.
Egg shell membrane protein contains significant quantities of the lysine-derived aldehyde, allysine, and its aldol condensation product. NaB3H4 reduction followed by alkaline hydrolysis of purified protein revealed that there were six residues/1000 of both allysine and the reduced aldol while only traces of desmosine and isodesmosine were detected. The amino acid composition of the membrane protein did not resemble that of mammalian elastin.
D015074:2-Aminoadipic Acid / Q000031:analogs & derivatives / Q000032:analysis*; D000596:Amino Acids / Q000032:analysis; D000600:Amino Acids, Dicarboxylic / Q000032:analysis*; D000818:Animals; D001894:Borohydrides; D003895:Desmosine / Q000032:analysis; D004528:Egg Shell / Q000032:analysis*; D008239:Lysine / Q000032:analysis*; D008565:Membrane Proteins / Q000032:analysis*
D000596:Amino Acids; D000600:Amino Acids, Dicarboxylic; D001894:Borohydrides; D008565:Membrane Proteins; D003895:Desmosine; D015074:2-Aminoadipic Acid; C000061:allysine; D008239:Lysine